if __name__ == '__main__':
 a_list = [{'a' : 1}, {'b' : 2}, {'c' : 3}, {'d' : 4}, {'e' : 5}]
 b_list = [{'a' : 1}, {'b' : 2}]
 ret_list = []
 for item in a_list:
  if item not in b_list:
   ret_list.append(item)
 for item in b_list:
  if item not in a_list:
   ret_list.append(item)
 print(ret_list)

if __name__ == '__main__':
 a_list = [{'a' : 1}, {'b' : 2}, {'c' : 3}, {'d' : 4}, {'e' : 5}]
 b_list = [{'a' : 1}, {'b' : 2}]
 ret_list = [item for item in a_list if item not in b_list] + [item for item in b_list if item not in a_list]
 print(ret_list)

if __name__ == '__main__':
 a_list = [1, 2, 3, 4, 5]
 b_list = [1, 4, 5]
 ret_list = list(set(a_list)^set(b_list))
 print(ret_list)

if __name__ == '__main__':
 a_list = [1, 2, 3, 4, 5]
 b_list = [1, 4, 5]
 ret_list = list(set(a_list).union(set(b_list)))
 print(ret_list)

if __name__ == '__main__':
 a_list = [1, 2, 3, 4, 5]
 b_list = [1, 4, 5]
 ret_list = list((set(a_list).union(set(b_list)))^(set(a_list)^set(b_list)))
 print(ret_list)